- Tinnitus Visual Analogue Scale (TVAS) Tinnitus Visual Analogue Scale (VAS) is a collection of straight lines 100mm in length anchored at the end with extremes (e.g., not bothersome, extremely bothersome) of the tinnitus sensation, feeling or response. The strength of this method lies in the compellation of several measurements (e.g., weekly average of tinnitus annoyance). This method of measuring distress has been recommended for use in research (Axelsson, Coles, Erlandsson, Meikle, & Vernon, 1993).